An Instrument to Monitor the Tilt of Large Structures.

Abstract

The long-term or short-term tilt of structures such as locks or dams may be measured with an automatic level that has been temporarily modified for the purpose. The modifications consist of the addition of an autocollimating eyepiece and an optical vernier. A calibration mirror is also required for the measurement of long-term tilt. Accuracies of 1 to 5 seconds of tilt may be obtained. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA129598

Entities

People

  • Kenneth Robertson

Organizations

  • Geospatial Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Adhesives
  • Aluminum
  • Army
  • Army Corps Of Engineers
  • Calibration
  • Concrete
  • Dams
  • Field Tests
  • Instrumentation
  • Laboratory Tests
  • Leveling
  • Line Of Sight
  • Measurement
  • Mounts
  • Orientation (Direction)
  • Refractive Index

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Defense Acquisition Program Management
  • Geodesy